Statistics for Engineers and Scientists
4th Edition
ISBN: 9780073401331
Author: William Navidi Prof.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 5.3, Problem 2E
Find the value of
1. Find the value of needed to construct a two-sided confidence interval of the given level with the given
- a. Level 90%, sample size 12.
- b. Level 95%, sample size 7.
- c. Level 99%, sample size 2.
- d. Level 95%, sample size 29.
Expert Solution & Answer
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Check out a sample textbook solutionStudents have asked these similar questions
Find the critical value t/α2 needed to construct a confidence interval of the given level with the given sample size. Round the answers to three decimal places.
a) For level 95% and sample size 7
b) For level 98% and sample size 12
c) For level 99% and sample size 27
d) For level 98% and sample size 14
1. The following table illustrates the BMI for a number of patients recently enrolled in a study investigating the relationship between BMI and type 2 diabetes.
Participant
BMI (kg/m2)
A
26.5
B
19.2
C
29.7
D
27.4
E
30.2
F
28.9
A) Assuming the participants can be considered to be normally distributed, and that they comefrom a population with a σ=2.4 kg/m2, calculate a 95% confidence interval for the mean BMI ofthe population for which they represent.B) Correctly interpret the confidence interval you found above.
The following table illustrates the BMI for a number of patients recently enrolled in a study investigating the relationship between BMI and type 2 diabetes.
Participant BMI (kg/m2)
A 26.5
B 19.2
C 29.7
D 27.4
E 30.2
F 28.9
A) Assuming the participants can be considered to be normally distributed, and that they come from a population with a σ=2.4 kg/m , calculate a 95% confidence interval for the mean BMI of the population for which they represent and correctly interpret the confidence interval you found.
Chapter 5 Solutions
Statistics for Engineers and Scientists
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